The action of one forcibly grabbing someone else’s face and smearing their hand across the said face or in some cases the eye. This action is used to generally humiliate the lankee and show the dominance and superiority of the lanker. There are varying degrees of a lank ranging from the gentle eye smear to the violent dual hand multiple swipes. A lank can be performed by sneaking up on the lankee or face to face.

“Aw man you just got lanked!”
“It’s alright I’ll lank him back so hard he’ll have stretch marks on his face.”